9 7/8′′ (250mm) Mine Drilling Bit for Very Hard Rocks IADC832

9 7/8'' (250.8mm) Air Mine Drilling Bits

1. Air Mine Hard Rock Drilling Bit Specifications

Size: 9 7/8'' (250.8mm)

IADC code: 832

Designed for extremely hard and abrasive formations with high compressive strength such as magnetite quartzite, quartzite, granite

Shirttail Protection: hardmetal on lug, wear resistant carbide on shirttail lip and lug

Pin Connection: 6 5/8" API Reg

Circulation Type: Jet Air

Cutting Structure: Ovoid on gage and inner rows

Bearing type: Roller--Ball--Thrust--Roller--Thrust

Open or sealed bearing available

Guarantee period: 4 years

Weight on Bit: 0.6~1.1 Kn/mm

Rotary Speed:  90~60 RPM

Air Back Pressure: 0.2~0.4 Mpa

Huanyu -- Your Reliable Supplier of Tricone Drill Bits

Main Products:
Tricone Bits (Steel Tooth & TCI), PDC Drill Bits (Steel &Matrix Body), Hole Opener (Reamers), PDC Core Drill Bits, Drag Bits, Bit Breaker, Spring Casing Centralizer, Bits Nozzles, PDC Cutters, One Cone Bit (Cone Cutters)

Size Available: 3''~26''

Huanyu is honest and serious supplier of various drill bits, with 16 years experience in drill bits industry, we now export to more than 50 countries, we are not only supplier but your best partner in China, we expect to develop your market with you by our good quality and price. Don't hesitate, to contact Huanyu, contact Shirley today, we will never disappointed you, trust us and give us an chance, you will get one more good partner in China.


Main Products We Supply:
1. Rock Bits
1). Model: Milled tooth tricone bits and Tungsten Carbide Insert (TCI) tricone bits
2). Size range: 3 1/2''~26''
3). Application: water, oil, gas, mining drilling
4). Status: New and Rebuilt
5). Brand: HUANYU, Kingdream(JZ), Chuanshi(CS), Lilin

2. PDC Bits
1). Model: Steel Body and Matrix body
2). Size range: 3 1/2''~17 1/2''
3). Application: water, oil, gas, mining drilling
4). Status: New and Rebuilt
5). Brand: HUANYU, Kingdream(JZ), Chuanshi(CS), BEST

3. Reamer Bits(Hole Opener)
1). Size:200mm~1700mm
2). Application:Oil, geological drilling

4. Single Cone Bits
Popular Size: 118mm, 152mm, 215.9mm

5. Cutters for Tri-cone Bits
with Mill tooth or Insert tooth

6. PDC Core Bits, Drag Bits



Expect distributors/wholesalers/users all over the world to extend market with us!